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Extended Intermolecular Interactions Governing Photocurrent–Voltage Relations in Ternary Organic Solar Cells

Overview of attention for article published in The Journal of Physical Chemistry Letters, September 2016
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Title
Extended Intermolecular Interactions Governing Photocurrent–Voltage Relations in Ternary Organic Solar Cells
Published in
The Journal of Physical Chemistry Letters, September 2016
DOI 10.1021/acs.jpclett.6b01962
Pubmed ID
Authors

Wolfgang Tress, Beatrice Beyer, Negar Ashari Astani, Feng Gao, Simone Meloni, Ursula Rothlisberger

Abstract

Efficient organic solar cells are based on (electron) donor-acceptor heterojunctions. An optically generated excited molecular state (exciton) is dissociated at this junction, forming a charge-transfer (CT) state in an intermediate step before the electron and hole are completely separated. The observed highly efficient dissociation of this Coulombically bound state raises the question on the dissociation mechanism. Here, we show that the observed high quantum yields of charge carrier generation and CT state dissociation are due to extended (and consequently weakly bound) CT states visible in absorption and emission spectra and first-principles calculations. Identifying a new geminate-pair loss mechanism via donor excimers, we find that the hole on the small-molecule donor is not localized on a single molecule and charge separation is correlated with the energetic offset between excimer and CT states. Thus, the charges upon interface charge transfer and even in the case of back-transfer and recombination are less localized than commonly assumed.

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The data shown below were collected from the profile of 1 X user who shared this research output. Click here to find out more about how the information was compiled.
Mendeley readers

Mendeley readers

The data shown below were compiled from readership statistics for 38 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United States 2 5%
Sweden 1 3%
Unknown 35 92%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 15 39%
Researcher 7 18%
Other 2 5%
Student > Master 2 5%
Student > Postgraduate 2 5%
Other 2 5%
Unknown 8 21%
Readers by discipline Count As %
Physics and Astronomy 10 26%
Chemistry 10 26%
Materials Science 8 21%
Engineering 2 5%
Unknown 8 21%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 22 September 2016.
All research outputs
#22,760,732
of 25,377,790 outputs
Outputs from The Journal of Physical Chemistry Letters
#7,613
of 10,169 outputs
Outputs of similar age
#289,184
of 328,656 outputs
Outputs of similar age from The Journal of Physical Chemistry Letters
#120
of 176 outputs
Altmetric has tracked 25,377,790 research outputs across all sources so far. This one is in the 1st percentile – i.e., 1% of other outputs scored the same or lower than it.
So far Altmetric has tracked 10,169 research outputs from this source. They receive a mean Attention Score of 4.9. This one is in the 1st percentile – i.e., 1% of its peers scored the same or lower than it.
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